JPH0547410A - Close-type lead-acid battery - Google Patents
Close-type lead-acid batteryInfo
- Publication number
- JPH0547410A JPH0547410A JP3224808A JP22480891A JPH0547410A JP H0547410 A JPH0547410 A JP H0547410A JP 3224808 A JP3224808 A JP 3224808A JP 22480891 A JP22480891 A JP 22480891A JP H0547410 A JPH0547410 A JP H0547410A
- Authority
- JP
- Japan
- Prior art keywords
- silica
- battery
- acid battery
- gel
- silica particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ゲル状電解液を用いた
密閉形鉛蓄電池に関するもので、特に高容量、サイクル
寿命性能に優れた密閉形鉛蓄電池を提供することを目的
としたものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed lead acid battery using a gel electrolyte, and an object thereof is to provide a sealed lead acid battery having a particularly high capacity and excellent cycle life performance. is there.
【０００２】[0002]
【従来の技術】一般にゲル式密閉鉛蓄電池（以下ゲル式
電池とする。）は、所定の酸濃度を有する硫酸と水ガラ
スまたは、珪酸ゾル溶液とを混合した電解液を電池内に
注液し、ゲル状として固定化し、密閉化を実現したもの
であるが、サイクル寿命性能があまりよくなくまたゲル
の硬度を上げてやることにより少しは、性能が改善でき
るが、電解液がゲル化する時間が短くなり注液作業が行
いにくくなり、また放電容量も低下してしまう。電解液
の酸濃度を下げれば、作業性や寿命性能を、改善するこ
とが出来るが放電容量が低下してしまう。2. Description of the Related Art Generally, a gel type sealed lead-acid battery (hereinafter referred to as a gel type battery) is prepared by injecting an electrolytic solution prepared by mixing sulfuric acid having a predetermined acid concentration and water glass or a silicic acid sol solution into the battery. , Which is fixed as a gel and is hermetically sealed, but the cycle life performance is not so good and the performance can be improved a little by increasing the hardness of the gel, but the time for the electrolyte to gel Becomes shorter, making it difficult to perform the liquid injection work, and also decreasing the discharge capacity. If the acid concentration of the electrolytic solution is lowered, workability and life performance can be improved, but the discharge capacity will be reduced.
【０００３】このような欠点のため約１０μｍの平均細
孔径を持つガラス繊維に電解液を吸収保持させる方式の
リテーナ式密閉形鉛蓄電池（以下リテーナ式電池とす
る。）の方がサイクル寿命性能が優れ、小さな細孔径を
有するガラスセパレータが高価であるにもかかわらずこ
れを液保持材として用いたリテーナ式電池が一般的に多
く採用されている。Due to such drawbacks, the cycle life performance of the retainer type sealed lead-acid battery (hereinafter referred to as retainer type battery) of the type in which the glass fiber having an average pore diameter of about 10 μm absorbs and holds the electrolytic solution is held. Despite the fact that a glass separator that is excellent and has a small pore size is expensive, a retainer battery that uses this as a liquid holding material is generally widely used.
【０００４】[0004]
【発明が解決しようとする課題】解決しようとする問題
点は、ゲル式電池において、リテーナ式電池に比べサイ
クル寿命が劣る点である。The problem to be solved is that gel type batteries have a shorter cycle life than retainer type batteries.
【０００５】[0005]
【課題を解決するための手段】電池の充電中に発生する
酸素ガスを負極で吸収させる密閉形鉛蓄電池において、
シリカ粒子の長さが太さの２倍以上ある細長い形状を有
しているシリカゾルを用いゲル化させたゲル状電解液を
用いかつシリカ濃度を電解液の２〜８ｗｔ％したことで
サイクル寿命性能が優れた安価な密閉形鉛蓄電池を提供
するものである。In a sealed lead-acid battery in which an oxygen gas generated during charging of the battery is absorbed by a negative electrode,
Cycle life performance is obtained by using a gel electrolyte that is gelled using silica sol having an elongated shape in which the length of silica particles is at least twice the thickness and the silica concentration is 2 to 8 wt% of the electrolyte. Provides an excellent and inexpensive sealed lead acid battery.
【０００６】[0006]
【実施例】以下本発明を実施例にて詳細に説明する。電
池は、容量約１０Ａｈ、単セルで極板には、化成済みの
正極板３枚と負極板４枚とで構成し、セパレータには平
均細孔径が約２０μｍの、ガラス繊維の不織布を用い
た。リテーナ式電池には、平均細孔径が約１０μｍの、
ガラス繊維の不織布を用いた。電解液には、稀硫酸を用
い種々のシリカゾルと混合し、シリカ分重量を除いた残
りで硫酸濃度が４２ｗｔ％となるようにした。試験に用
いたシリカ粒子は図１（Ａ）に示したように従来のほぼ
球形のものと、図１（Ｂ）に示したように長さが太さの
２倍以上ある細長い形状のものである。以下の実験に
は、太さが５〜20 mμ長さが40〜300mμのシリカ粒子を
用いた。 （実験１）表１に示す内容の電池を制作し、以下のサイ
クル寿命性能試験を行った。EXAMPLES The present invention will be described in detail below with reference to examples. The battery has a capacity of about 10 Ah, is a single cell, and is composed of three positive electrode plates and four negative electrode plates that have already been formed, and the separator is made of glass fiber non-woven fabric having an average pore diameter of about 20 μm. .. The retainer type battery has an average pore size of about 10 μm,
A non-woven fabric of glass fiber was used. Dilute sulfuric acid was used as the electrolytic solution and mixed with various silica sols, and the sulfuric acid concentration was adjusted to 42 wt% with the remainder excluding the weight of silica. The silica particles used in the test are the conventional substantially spherical particles as shown in FIG. 1 (A) and the elongated particles having a length twice or more as thick as shown in FIG. 1 (B). is there. In the following experiments, silica particles having a thickness of 5 to 20 mμ and a length of 40 to 300 mμ were used. (Experiment 1) A battery having the contents shown in Table 1 was manufactured and the following cycle life performance test was conducted.
【０００７】[0007]
【表１】 サイクル寿命試験条件（２５℃） 放電 放電電流２．５Ａ放電時間２時間 充電 充電電流１Ａ 充電時間６時間 上記５０サイクル毎に容量試験 放電 放電電流２．５Ａで端子電圧が１．７Ｖになるま
で放電する 充電 充電電流１Ａで放電容量の１３５％充電する 放電持続時間が３時間を下回った時点を寿命とした。[Table 1] Cycle life test condition (25 ° C) Discharge Discharge current 2.5A Discharge time 2 hours Charge charge current 1A Charge time 6 hours Capacity test discharge every 50 cycles above Discharge at discharge current 2.5A until terminal voltage reaches 1.7V Charge: 135% of the discharge capacity is charged with a charging current of 1 A. The life is defined when the discharge duration time is less than 3 hours.
【０００８】試験結果を図２に示す。初期性能では、本
発明品は、リテーナ式電池にくらべ放電持続時間が長く
優れていることがわかる。これは、リテーナ式電池で
は、電槽とエレメントの間に空間が存在するのに対し、
ゲル式では、この部分にも電解液が存在できるので電池
内部のＳＯ4 - 量が多くなるためである。さらに図２か
ら明らかなように、本発明品は、球形を有するシリカゾ
ルを用いて制作した従来のゲル式電池に比べ寿命性能が
大幅に改善されており、リテーナ式電池と比べても良好
な結果であった。The test results are shown in FIG. It can be seen that in the initial performance, the product of the present invention has a longer discharge duration and is superior to the retainer type battery. This is because the retainer type battery has a space between the battery case and the element.
This is because in the gel system, the electrolyte can also exist in this portion, so that the amount of SO 4 − inside the battery increases. Further, as is clear from FIG. 2, the product of the present invention has a significantly improved life performance compared to the conventional gel type battery produced by using the silica sol having a spherical shape, and has a good result as compared with the retainer type battery. Met.
【０００９】このように本発明品の寿命性能が優れてい
たのは、細長いシリカ粒子を用いて製作したゲルのほう
がクラックが入り難くこのクラックによる抵抗成分が増
加しにくいためと考えられるが、経験的に必ずしもクラ
ックが入り難いゲルを用いた電池の性能が優れているわ
けではなくはっきりとしたことは、わからなかった。 （実験２）次にＳｉＯ2 濃度の影響を調べるため、表２
に示す内容の電池を製作し、上記寿命試験条件で実験を
行った。The reason why the product of the present invention was excellent in the life performance is considered to be that the gel produced by using the elongated silica particles was less likely to have cracks and the resistance component due to the cracks was less likely to increase. However, it was not clear that the performance of the battery using the gel, which is hard to crack, was not necessarily excellent and it was clear. (Experiment 2) Next, in order to investigate the influence of the SiO 2 concentration, Table 2
A battery having the contents shown in 1 was manufactured, and an experiment was conducted under the above life test conditions.
【００１０】[0010]
【表２】 [Table 2]
【００１１】試験結果を図３に示す。ＳｉＯ2 濃度を電
解液の２〜８ｗｔ％の範囲内に調整したゲルを用いた電
池の寿命性能が良いことがわかった。１ｗｔ％では、初
期容量は、大きいのだが試験中の、減液量が大きく密閉
電池として適さなかった。また１１ｗｔ％では、ゲル化
時間が早く注液作業が困難であり、寿命試験は行わなか
った。The test results are shown in FIG. It was found that the life performance of the battery using the gel in which the SiO 2 concentration was adjusted within the range of 2 to 8 wt% of the electrolytic solution was good. At 1 wt%, the initial capacity was large, but the amount of liquid reduction during the test was large and it was not suitable as a sealed battery. Further, at 11 wt%, the gelation time was short and the liquid injection work was difficult, so the life test was not conducted.
【００１２】また細長いシリカは、枝分かれしているも
のでも、同様に効果があることは、言うまでもない。さ
らに寿命性能を向上させるために電解液中に燐酸を添加
することがあるが、そのことによっても本発明の効果が
そこなわれることはない。なお硫酸濃度によってゲル化
時間は異なるが、密閉式鉛蓄電池に適用される濃度であ
れば、実際上その差ほとんどないと考えてよい。Needless to say, even if the elongated silica is branched, it has the same effect. Further, phosphoric acid may be added to the electrolytic solution in order to further improve the life performance, but this does not impair the effects of the present invention. Although the gelling time differs depending on the sulfuric acid concentration, it can be considered that there is practically no difference as long as the concentration is applicable to the sealed lead-acid battery.
【００１３】[0013]
【発明の効果】上述の実施例から明らかなように、本発
明による密閉式鉛蓄電池は、従来の密閉式鉛蓄電池の放
電容量、寿命性能を大幅に改善できた点、また従来リテ
ーナ式電池に比べ安価にでき、初期放電性能も優れてい
る点、工業価値は、非常に大きい。As is apparent from the above-described embodiments, the sealed lead acid battery according to the present invention can significantly improve the discharge capacity and life performance of the conventional sealed lead acid battery, and also has a conventional retainer type battery. Compared to the fact that it can be cheaper and has excellent initial discharge performance, it has a great industrial value.
【図１】シリカ粒子形状を示した図FIG. 1 is a diagram showing the shape of silica particles.
【図２】寿命試験結果を比較した図[Fig.2] Comparison of life test results
【図３】寿命試験結果を比較した図FIG. 3 is a diagram comparing life test results.
Claims (1)
で吸収させる密閉形鉛蓄電池において、シリカ粒子の長
さが太さの２倍以上ある細長い形状を有しているシリカ
ゾルを用いゲル化させたゲル状電解液を用い、かつその
シリカ濃度を電解液の２〜８ｗｔ％としたことを特徴と
する、ゲル式密閉形鉛蓄電池。1. A sealed lead-acid battery in which oxygen gas generated during charging of the battery is absorbed by a negative electrode, using a silica sol having an elongated shape in which the length of silica particles is at least twice the thickness. A sealed gel lead-acid battery of gel type, characterized in that the gelled electrolyte solution is used and the silica concentration thereof is 2 to 8 wt% of the electrolyte solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3224808A JPH0547410A (en) | 1991-08-08 | 1991-08-08 | Close-type lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3224808A JPH0547410A (en) | 1991-08-08 | 1991-08-08 | Close-type lead-acid battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0547410A true JPH0547410A (en) | 1993-02-26 |
Family
ID=16819533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3224808A Pending JPH0547410A (en) | 1991-08-08 | 1991-08-08 | Close-type lead-acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0547410A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005050770A1 (en) * | 2003-11-21 | 2005-06-02 | Akzo Nobel N.V. | Composition |
| US7682738B2 (en) | 2002-02-07 | 2010-03-23 | Kvg Technologies, Inc. | Lead acid battery with gelled electrolyte formed by filtration action of absorbent separators and method for producing it |
-
1991
- 1991-08-08 JP JP3224808A patent/JPH0547410A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7682738B2 (en) | 2002-02-07 | 2010-03-23 | Kvg Technologies, Inc. | Lead acid battery with gelled electrolyte formed by filtration action of absorbent separators and method for producing it |
| WO2005050770A1 (en) * | 2003-11-21 | 2005-06-02 | Akzo Nobel N.V. | Composition |
| JP2007534116A (en) * | 2003-11-21 | 2007-11-22 | アクゾ ノーベル エヌ．ブイ． | Composition |
| US7674833B2 (en) | 2003-11-21 | 2010-03-09 | Akzo Nobel N.V. | Composition prepared from silica sol and mineral acid |
| JP2011057546A (en) * | 2003-11-21 | 2011-03-24 | Akzo Nobel Nv | Composition |
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